Differential case lid



FIG. 1 is a perspective view of a differential case lid showing our new design;

FIG. 2 is front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is back elevational view thereof. 

CLAIM The ornamental design for a differential case lid, as shown. 